import { Image, InfiniteScroll, List } from 'antd-mobile'
// mock数据
// import { users } from './users'
import { useEffect, useState } from 'react'
import { fetchListAPI, ListRes } from '@/apis/list'
import { useNavigate } from 'react-router-dom'

type Props = {
    channel_id: string
}
const HomeList = (props: Props) => {
    const { channel_id } = props;

    // 获取列表数据
    const [listRes, setListRes] = useState<ListRes>({
        results: [],
        pre_timestamp: '' + new Date().getTime()
    })

    useEffect(() => {
        const getList = async () => {
            const res = await fetchListAPI(
                {
                    channel_id: channel_id,
                    timestamp: '' + new Date().getTime()
                }
            );
            setListRes(res.data.data)
        }
        getList()
    }, [channel_id])

    // 开关， 标记当前是否还有新数据
    // 上拉加载触发的必要条件：1. hasMore = true 2. 小于 threshold
    const [hasMore, setHasMore] = useState(true)
    // 加载下一页的函数
    const loadMore = async () => {
        // 编写加载下一页的核心逻辑
        console.log('加载下一页数据了');
        try {
            const res = await fetchListAPI(
                {
                    channel_id: channel_id,
                    timestamp: listRes.pre_timestamp
                }
            );
            // 拼接新数据 + 存取下一次请求的时间戳
            setListRes({
                results: [...listRes.results, ...res.data.data.results],
                pre_timestamp: res.data.data.pre_timestamp
            })
            // 停止监听
            if (res.data.data.results.length <= 0 || res.data.data.pre_timestamp == null) {
                setHasMore(false)
            }
        } catch (error) {
            throw new Error('加载下一页失败')
        }
    }

    const navigate = useNavigate()
    const goDetail = (id: string) => {
        navigate(`/detail?id=${id}`);
    }

    return (
        <>
            <List>
                {listRes.results.map((item) => (
                    <List.Item
                    onClick={()=>goDetail(item.art_id)}
                        key={item.art_id}
                        prefix={
                            <Image
                                src={item.cover.images?.[0]}
                                style={{ borderRadius: 20 }}
                                fit="cover"
                                width={40}
                                height={40}
                            />
                        }
                        description={item.pubdate}
                    >
                        {item.title}
                    </List.Item>
                ))}
            </List>
            <InfiniteScroll loadMore={loadMore} hasMore={hasMore} threshold={10}/>
        </>
    )
}

export default HomeList